build: migrate to esbuild

.github/workflows/ci.yml

@@ -6,6 +6,9 @@ on:
   pull_request:
     branches: [main]
 
+env:
+  YARN_ENABLE_GLOBAL_CACHE: false
+
 jobs:
   chore:
     name: "Testing chores"

.github/workflows/publish.yml

@@ -4,6 +4,9 @@ on:
   push:
     branches: [main]
 
+env:
+  YARN_ENABLE_GLOBAL_CACHE: false
+
 jobs:
   release-please:
     runs-on: ubuntu-latest

.github/workflows/update-nock-files.yml

@@ -8,6 +8,9 @@ on:
         type: number
         required: true
 
+env:
+  YARN_ENABLE_GLOBAL_CACHE: false
+
 jobs:
   build-and-update-nock-files:
     runs-on: ubuntu-latest

mkshims.ts

@@ -6,7 +6,8 @@ import {Engine}                     from './sources/Engine';
 import {SupportedPackageManagerSet} from './sources/types';
 
 function shouldGenerateShim(name: string) {
-  return name !== `chunks`;
+  // No filtering needed at the moment
+  return true;
 }
 
 const engine = new Engine();

package.json

@@ -32,6 +32,7 @@
     "babel-plugin-dynamic-import-node": "^2.3.3",
     "clipanion": "^3.0.1",
     "debug": "^4.1.1",
+    "esbuild": "0.16.15",
     "eslint": "^8.0.0",
     "eslint-plugin-arca": "^0.15.0",
     "jest": "^29.0.0",
@@ -40,16 +41,14 @@
     "semver": "^7.1.3",
     "supports-color": "^9.0.0",
     "tar": "^6.0.1",
-    "ts-loader": "^9.0.0",
     "ts-node": "^10.0.0",
     "typescript": "^4.3.2",
     "v8-compile-cache": "^2.3.0",
-    "webpack": "^5.38.1",
-    "webpack-cli": "^4.0.0",
     "which": "^2.0.2"
   },
   "scripts": {
-    "build": "rm -rf dist shims && webpack && ts-node ./mkshims.ts",
+    "build": "rm -rf dist shims && run build:bundle && ts-node ./mkshims.ts",
+    "build:bundle": "esbuild ./sources/_entryPoint.ts --bundle --platform=node --target=node14.14.0 --external:corepack --outfile='./dist/corepack.js' --resolve-extensions='.ts,.mjs,.js'",
     "corepack": "ts-node ./sources/_entryPoint.ts",
     "lint": "eslint .",
     "prepack": "yarn build",

sources/_entryPoint.ts

@@ -1,8 +1,8 @@
+#!/usr/bin/env node
 import {runMain} from './main';
 
 // Used by the generated shims
 export {runMain};
 
-// Using `eval` to be sure that Webpack doesn't transform it
-if (process.mainModule === eval(`module`))
+if (process.mainModule === module)
   runMain(process.argv.slice(2));

sources/commands/Enable.ts

@@ -5,7 +5,6 @@ import path                                                              from 'p
 import which                                                             from 'which';
 
 import {Context}                                                         from '../main';
-import * as nodeUtils                                                    from '../nodeUtils';
 import {isSupportedPackageManager, SupportedPackageManagerSetWithoutNpm} from '../types';
 
 export class EnableCommand extends Command<Context> {
@@ -51,8 +50,7 @@ export class EnableCommand extends Command<Context> {
     // install directory is within a symlink
     installDirectory = fs.realpathSync(installDirectory);
 
-    // We use `eval` so that Webpack doesn't statically transform it.
-    const manifestPath = nodeUtils.dynamicRequire.resolve(`corepack/package.json`);
+    const manifestPath = require.resolve(`corepack/package.json`);
 
     const distFolder = path.join(path.dirname(manifestPath), `dist`);
     if (!fs.existsSync(distFolder))

sources/commands/Hydrate.ts

@@ -35,7 +35,7 @@ export class HydrateCommand extends Command<Context> {
     const archiveEntries = new Map<string, Set<string>>();
     let hasShortEntries = false;
 
-    const {default: tar} = await import(/* webpackMode: 'eager' */ `tar`);
+    const {default: tar} = await import(`tar`);
 
     await tar.t({file: fileName, onentry: entry => {
       const segments = entry.header.path.split(/\//g);

sources/commands/Prepare.ts

@@ -117,7 +117,7 @@ export class PrepareCommand extends Command<Context> {
       if (!this.json)
         this.context.stdout.write(`Packing the selected tools in ${path.basename(outputPath)}...\n`);
 
-      const {default: tar} = await import(/* webpackMode: 'eager' */ `tar`);
+      const {default: tar} = await import(`tar`);
       // Recreate the folder in case it was deleted somewhere else:
       await mkdir(baseInstallFolder, {recursive: true});
       await tar.c({gzip: true, cwd: baseInstallFolder, file: path.resolve(outputPath)}, installLocations.map(location => {

sources/corepackUtils.ts

@@ -95,7 +95,7 @@ export async function findInstalledVersion(installTarget: string, descriptor: De
 }
 
 export async function installVersion(installTarget: string, locator: Locator, {spec}: {spec: PackageManagerSpec}) {
-  const {default: tar} = await import(/* webpackMode: 'eager' */ `tar`);
+  const {default: tar} = await import(`tar`);
   const {version, build} = semver.parse(locator.reference)!;
 
   const installFolder = path.join(installTarget, locator.name, version);
@@ -194,7 +194,7 @@ export async function runVersion(installSpec: { location: string, spec: PackageM
   // - Yarn uses process.argv[1] to determine its own path: https://github.com/yarnpkg/berry/blob/0da258120fc266b06f42aed67e4227e81a2a900f/packages/yarnpkg-cli/sources/main.ts#L80
   // - pnpm uses `require.main == null` to determine its own version: https://github.com/pnpm/pnpm/blob/e2866dee92991e979b2b0e960ddf5a74f6845d90/packages/cli-meta/src/index.ts#L14
 
-  process.env.COREPACK_ROOT = path.dirname(eval(`__dirname`));
+  process.env.COREPACK_ROOT = path.dirname(require.resolve(`corepack/package.json`));
 
   process.argv = [
     process.execPath,

sources/main.ts

@@ -1,5 +1,7 @@
 import {BaseContext, Builtins, Cli, Command, Option, UsageError} from 'clipanion';
 
+import {version as corepackVersion}                              from '../package.json';
+
 import {Engine}                                                  from './Engine';
 import {DisableCommand}                                          from './commands/Disable';
 import {EnableCommand}                                           from './commands/Enable';
@@ -87,8 +89,6 @@ async function executePackageManagerRequest({packageManager, binaryName, binaryV
 }
 
 async function main(argv: Array<string>) {
-  const corepackVersion = require(`../package.json`).version;
-
   // Because we load the binaries in the same process, we don't support custom contexts.
   const context = {
     ...Cli.defaultContext,

sources/nodeUtils.ts

@@ -1,12 +1,6 @@
 import Module from 'module';
 import path   from 'path';
 
-declare const __non_webpack_require__: NodeRequire | undefined;
-
-export const dynamicRequire: NodeRequire = typeof __non_webpack_require__ !== `undefined`
-  ? __non_webpack_require__
-  : require;
-
 /**
  * Loads a module as a main module, enabling the `require.main === module` pattern.
  */